I don't think you want a 12,000 column table.

On this, we are in complete agreement.

Just use an 'intersection' table which has just two columns, one for the company and the other for the question they answered in the affirmative. There would not be any rows for questions they answered 'no' to.

If I understand correctly if on average each company has answered 'yes' to ~500 questions, I'll have a two-column, 15-million row table?

And I'd still have 350 individual queries to run on this table, no?

In reply to Re^4: Feasability of quick generation of complex report from large db? by punch_card_don
in thread Feasability of quick generation of complex report from large db? by punch_card_don

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